Height-adjustable large-span prestressed steel strand supporting frame

Abstract

The utility model belongs to the technical field of steel strand supporting frames, and particularly relates to a large-span prestress steel strand supporting frame with the adjustable height. Comprising a supporting frame base, a supporting frame device and a transverse rod, the supporting frame device is provided with supporting main stand columns and an adjusting structure for adjusting the elongation of the supporting main stand columns, and the supporting main stand columns are oppositely connected to the two sides of the supporting frame base; the transverse rod is connected to the supporting main stand column, the elongation of the supporting main stand column is adjusted through an adjusting structure, and then the relative distance between the bottom end of the transverse rod and the upper end of the supporting frame base is adjusted. According to the scheme, the structural design of the adjustable supporting frame device and the supporting frame base is adopted, and the effects that in the laying and dragging process, a steel strand bonding layer is protected, the service life of a steel strand is prolonged, the bearing capacity of the whole structure is improved, the maintenance cost is reduced, and the safety of the structure is improved are achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel strand support frames, and in particular relates to a height-adjustable large-span prestressed steel strand support frame. Background Art

[0002] At present, the prestressed steel strands in the rib beams of prestressed hollow slabs are usually supported by welding steel strands on the steel skeleton to position the steel bars or by a simple support frame. However, the curvature, spatial elevation and inflection point of the spatial curved prestressed steel strands cannot be accurately controlled, which affects the stress. Especially for large-span and ultra-thick prestressed hollow slabs, the steel strands are prone to sagging due to excessive length. The bonding layer of the steel strands is easily worn by the bracket or steel bars during the laying and dragging process, thereby affecting the stress and service life of the steel strands. To this end, the present invention proposes a new solution to the above technical problems. Utility Model Content

[0003] The purpose of this utility model is to provide a large-span prestressed steel strand support frame with adjustable height, which adopts a structural design of an adjustable support frame device and a support frame base, thereby protecting the bonding layer of the steel strand during the laying and dragging process, extending the service life of the steel strand, improving the bearing capacity of the overall structure, reducing maintenance costs and improving the safety of the structure.

[0004] Based on this, the utility model provides a large-span prestressed steel strand support frame with adjustable height, comprising:

[0005] Support frame base;

[0006] A support frame device, the support frame device is provided with a supporting main column and an adjustment structure for adjusting the elongation of the supporting main column, the supporting main column is relatively connected to two sides of the support frame base;

[0007] A cross bar is connected to the main support column, and the elongation of the main support column is adjusted by the adjustment structure, thereby adjusting the relative distance between the bottom end of the cross bar and the upper end of the support frame base.

[0008] As described above, the height-adjustable large-span prestressed steel strand support frame, the support frame device is further provided with a limiting structure, and the limiting structure is connected to the supporting main column to limit the crossbar.

[0009] As described above, a large-span prestressed steel strand support frame with adjustable height, the limiting structure is provided with a U-shaped iron and a limiting block, the U-shaped iron is fixedly connected to the main supporting column, the cross bar is connected to the U-shaped iron, and the limiting block is fixedly connected to both sides of the cross bar for sliding out limitation.

[0010] As described above, in a large-span prestressed steel strand support frame with adjustable height, the main support column is movably connected to the support frame base, the main support column is a screw, and the main support column is provided with an upper connecting end, the screw is fixedly connected to the support frame base through the adjustment structure, and the U-shaped iron is fixedly connected to the upper connecting end.

[0011] As described above, a large-span prestressed steel strand support frame with adjustable height, the adjustment structure is provided with an upper nut and a lower nut, the upper nut and the lower nut can be connected to the screw rod, the upper nut is connected to the upper side of the upper end of the support frame base, and the lower nut is connected to the lower side of the upper end of the support frame base relative to the upper nut, thereby adjusting the elongation of the supporting main column.

[0012] In the above-mentioned large-span prestressed steel strand support frame with adjustable height, the cross bar is designed as a round iron tube, and the cross bar is rotatably connected to the U-shaped iron.

[0013] As described above, the height-adjustable large-span prestressed steel strand support frame has a base provided with a connecting frame and base support columns, and the base support columns are relatively connected to the four sides of the connecting frame to stabilize the connecting frame.

[0014] As described above, in the height-adjustable large-span prestressed steel strand support frame, main column holes are provided on two adjacent sides of the connecting frame, and the supporting main columns can be movably connected to the connecting frame through the main column holes.

[0015] As described above, a large-span prestressed steel strand support frame with adjustable height, the support frame base is provided with a support frame and a fixing plate, and the fixing plate is fixedly connected to the upper and lower ends of the support frame which are arranged oppositely to stabilize the support frame.

[0016] As described above, a large-span prestressed steel strand support frame with adjustable height is designed to be trapezoidal, and a second main column hole is provided in the middle of the upper end of the support frame. The main supporting column can be movably connected to the connecting frame through the second main column hole.

[0017] The implementation of the present invention has the following beneficial effects:

[0018] 1. This solution adopts a structural design of an adjustable support frame device plus a support frame base. The support frame device is provided with supporting main columns and an adjustment structure. The supporting main columns are relatively connected on both sides of the support frame base, and the cross bars are connected to the supporting main columns. The elongation of the supporting main columns can be adjusted by adjusting the adjustment structure, and then the relative distance between the bottom end of the cross bar and the upper end of the support frame base can be adjusted, so that the steel strand will not contact with the support frame base and cause wear after installation, thereby achieving the effect of protecting the bonding layer of the steel strand during the laying and dragging process, extending the service life of the steel strand, improving the bearing capacity of the overall structure, reducing maintenance costs and improving the safety of the structure.

[0019] 2. This solution adopts a structural design in which the cross bar is rotatably connected to the U-shaped iron. The cross bar is made of round iron pipe. After the steel strand is installed on the cross bar, the cross bar can rotate on the U-shaped iron as it is laid and towed. This avoids the wear of the steel strand bonding layer caused by the friction between the steel strand and the cross bar, thereby protecting the steel strand bonding layer during the laying and towing process, extending the service life of the steel strand, improving the bearing capacity of the overall structure, reducing maintenance costs, improving the safety of the structure, and extending the service life of the steel strand support frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0021] Figure 1 This is a schematic structural diagram of Example 1 of the present utility model;

[0022] Figure 2 To correspond Figure 1 Left view of;

[0023] Figure 3 To correspond Figure 1 A top view of

[0024] Figure 4 This is a schematic structural diagram of Example 2 of the present utility model;

[0025] Figure 5 To correspond Figure 4 Left view of;

[0026] Figure 6 To correspond Figure 4 Top view of .

[0027] In the figure: 1-support frame base, 11-connecting frame, 111-main column hole, 12-base support column, 13-support frame, 131-main column hole two, 14-fixing plate; 2-support frame device, 21-support main column, 212-upper connecting end, 22-limiting structure, 221-U-shaped iron, 222-limiting block, 23-adjusting structure, 231-upper nut, 232-lower nut, 233-second upper nut; 3-cross bar; 4-steel strand. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] like Figures 1 to 6 As shown, the embodiment of the present invention provides a large-span prestressed steel strand support frame with adjustable height, comprising:

[0030] A support frame base 1; a support frame device 2, wherein the support frame device 2 is provided with a supporting main column 21 and an adjusting structure 23 for adjusting the elongation of the supporting main column 21, and the supporting main column 21 is relatively connected to both sides of the support frame base 1; a cross bar 3, wherein the cross bar 3 is connected to the supporting main column 21, and the elongation of the supporting main column 21 is adjusted by the adjusting structure 23, thereby adjusting the relative distance between the bottom end of the cross bar 3 and the upper end of the support frame base 1, so that the steel wire rope can be smoothly installed on the cross bar 3 to avoid contact with the support frame base 1.

[0031] Example 1:

[0032] See also Figures 1 to 3 In this embodiment, the support frame device 2 is also provided with a limiting structure 22, and the limiting structure 22 is connected to the supporting main column 21 to limit the cross bar 3; the limiting structure 22 can be provided with an elastic limiting member, and the elastic limiting member is provided between the supporting main column 21 and the cross bar 3, and is used to provide a buffer when the cross bar 3 contacts the limiting position, to prevent the steel strand 4 from being damaged by collision during the installation process, so as to protect the bonding layer of the steel strand.

[0033] Specifically, the limiting structure 22 is provided with a U-shaped iron 221 and a limiting block 222. The U-shaped iron 221 is preferably a U-shaped round iron. The U-shaped iron 221 can be directly welded to the supporting main column 21 and can rotate with the supporting main column 21, or the U-shaped iron 221 can also be provided with multiple fixing holes at the bottom, and matching fixing holes are synchronously provided on the supporting main column 21. The U-shaped iron 221 is fixed to the supporting main column 21 by bolts or screws, so that the U-shaped iron 221 can firmly support the cross bar 3, and at the same time it is convenient to fine-tune the rotation direction of the U-shaped iron 221, so as to enhance the stability of the steel strand support frame. The utility model preferably welds the U-shaped iron 221 directly to the supporting main column 21 to ensure the stability of the connection between the U-shaped iron 221 and the supporting main column 21, thereby improving the overall stability of the steel strand support frame during use. ; A wear-resistant lining is provided on the inner side of the U-shaped iron 221 to reduce the friction between the cross bar 3 and the U-shaped iron 221, thereby extending the service life of the steel strand support frame; the cross bar 3 is connected to the U-shaped iron 221, and the limit blocks 222 are fixedly connected to both sides of the cross bar 3 for sliding out; a quick release mechanism is provided between the limit block 222 and the cross bar 3, and the quick release mechanism includes a quick-release pin and a limit hole. When it is necessary to quickly adjust the position of the cross bar 3, the quick-release pin can be inserted or pulled out of the limit hole to achieve rapid limit and release, or the limit block 222 can be directly welded to the cross section at both ends of the cross bar 3. The utility model preferably welds the limit block 222 directly to the cross section at both ends of the cross bar 3; the outer surface of the limit block 222 is coated with an anti-rust layer to prevent it from being affected by the environment during use and rusting, thereby improving the durability of the steel strand support frame.

[0034] Furthermore, the main support column 21 is movably connected to the support frame base 1, and the main support column 21 is preferably a φ14 screw, and the screw is provided with multiple thread segments, and the pitch of each thread segment is different, so that the height of the main support column 21 can be accurately adjusted through the adjustment structure 23; the main support column 21 is provided with an upper connecting end 212, and the screw is fixedly connected to the support frame base 1 through the adjustment structure 23, and the U-shaped iron 221 is fixedly connected to the upper connecting end 212, and the upper connecting end 212 is the fixing hole setting end or the welding end of the U-shaped iron 221.

[0035] Furthermore, the adjustment structure 23 is provided with an upper nut 231 and a lower nut 232, and the upper nut 231 and the lower nut 232 can be connected to the screw, and the upper nut 231 and the lower nut 232 can be selected according to the different pitches of the screw thread. The upper nut 231 and the lower nut 232 are both provided with a nut locking mechanism, and the locking mechanism includes a locking screw and a locking washer. When the upper nut 231 and the lower nut 232 are adjusted to the desired position, the upper nut 231 and the lower nut 232 can be locked in place by tightening the locking screw. The screw is used to prevent the position from changing during use and affecting the stability of the steel wire rope support frame; the upper nut 231 is connected to the upper side of the upper end of the support frame base 1, and the lower nut 232 is connected to the lower side of the upper end of the support frame base 1 relative to the upper nut 231. The elongation of the supporting main column 21 can be adjusted by rotating the upper nut 231 or the lower nut 232 respectively; the inner sides of the upper nut 231 and the lower nut 232 are provided with an anti-slip coating to increase the friction between them and the screw to prevent sliding or loosening during use.

[0036] Furthermore, the cross bar 3 is designed as a round iron tube, and the cross bar 3 can be rotatably connected to the U-shaped iron 221; bearings are respectively provided at both ends of the cross bar 3, and the bearings can be embedded and installed in the U-shaped iron 221. Through the setting of the bearings 231, the cross bar 3 can rotate smoothly in the U-shaped iron 221; the utility model preferably welds the limit blocks 222 on the circular cross-sections at both ends of the cross bar 3, while preventing the cross bar 3 from sliding out, the cross bar 3 can roll with the drag of the steel strand to avoid wearing the steel strand bonding layer; the cross bar 3 is also provided with reinforcing ribs inside to increase its structural strength and bending resistance to ensure that it will not deform during use.

[0037] Furthermore, the support frame base 1 is provided with a connecting frame 11 and a base support column 12. The connecting frame 11 is preferably a rectangular frame structure, which is welded by four angle irons. The angle irons are provided with reinforcing ribs to improve the overall rigidity and stability of the connecting frame 11; the base support column 12 is relatively connected to the connecting frame 11 on all sides to stabilize the connecting frame 11; the lower end of the base support column 12 is provided with a base anti-slip pad, and the base anti-slip pad is made of a high friction coefficient material to increase the stability and anti-slip performance of the base to prevent the steel strand bracket from sliding during use; base fixing holes are also provided around the connecting frame 11, and the support frame base 1 can be fixed to a wall or other fixed structure by bolts, further improving the stability of the steel strand support frame.

[0038] Furthermore, main column holes 111 are provided on two adjacent sides of the connecting frame 11, and the supporting main column 21 can vertically pass through the connecting frame 11 through the main column hole 111, and the elongation of the supporting main column 21 can be adjusted by adjusting the upper nut 231 and the lower nut 232 to firmly support the cross bar 3, thereby improving the convenience of adjusting the steel strand support frame.

[0039] Example 2:

[0040] See also Figures 4 to 6 In this embodiment, the support frame base 1 is provided with a support frame 13 and a fixing plate 14. The fixing plate 14 is fixedly connected to the upper and lower ends of the relatively arranged support frame 13 to stabilize the support frames 13 on both sides to prevent tilting or offsetting, which affects the overall stability of the steel strand support frame; the fixing plate 14 is provided with a ground fixing hole, through which the support frame base 1 can be fixed to the ground to further stabilize the support frame base 1; the fixing plate 14 is made of aluminum alloy or steel, with high strength and durability, and the thickness of the fixing plate 14 is designed to be 5-10 mm to provide sufficient supporting force and stability; the outer surface of the support frame 13 is coated with an anti-corrosion coating to prevent rust or corrosion caused by environmental influences during use, thereby extending the service life of the support frame 13.

[0041] Furthermore, the support frame 13 is of trapezoidal design, and the trapezoidal design of the support frame 13 includes a structure that is wide at the top and narrow at the bottom, and the upper width is greater than the lower width to provide a larger contact area and stability; the upper end width of the support frame 13 is preferably designed to be 1.2 times the lower end width to improve its stability and supporting capacity; a main column hole 21 is provided in the middle of the upper end of the support frame 13, and the supporting main column 21 can pass through the support frame 13 vertically through the main column hole 21, and the elongation of the supporting main column 21 can be adjusted by the adjustment structure 23 to firmly support the cross bar 3, thereby improving the convenience of adjusting the steel strand support frame; a reinforcement angle is also provided at the lower end edge of the support frame 13, and the reinforcement angle is fixed to the lower end of the support frame 13 by integral molding or welding, so as to enhance the structural strength of the lower end of the support frame 13, prevent deformation during use, and improve the safety of use of the steel strand support frame.

[0042] In this embodiment, the adjustment structure 23 is preferably provided with a second upper nut 233, and the second upper nut 233 is provided with a nut locking mechanism, and the locking mechanism includes a locking screw and a locking washer. When the second upper nut 233 is adjusted to the desired position, the second upper nut 233 can be locked on the screw by tightening the locking screw to prevent the position from changing during use and affecting the stability of the steel strand support frame; the second upper nut 233 is connected to the upper side of the upper end of the support frame base 1, and the elongation of the supporting main column 21 can be adjusted by rotating the second upper nut 233; the inner side of the second upper nut 233 is provided with an anti-slip coating to increase the friction between it and the screw to prevent sliding or loosening during use.

[0043] It should be understood that the terms "first", "second", etc. are used in the present invention to describe various information, but such information should not be limited to these terms, which are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, the "first" information may also be referred to as the "second" information, and similarly, the "second" information may also be referred to as the "first" information. In addition, the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., which indicate orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present invention.

[0044] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A large-span prestressed steel strand support frame with adjustable height, characterized in that: include: Support frame base (1); A support frame device (2), the support frame device (2) being provided with a supporting main column (21) and an adjusting structure (23) for adjusting the elongation of the supporting main column (21), the supporting main column (21) being relatively connected to both sides of the support frame base (1); A crossbar (3), wherein the crossbar (3) is connected to the main support column (21), and the elongation of the main support column (21) is adjusted by the adjustment structure (23), thereby adjusting the relative distance between the bottom end of the crossbar (3) and the upper end of the support frame base (1).

2. The height-adjustable large-span prestressed steel strand support frame according to claim 1, characterized in that: The support frame device (2) is further provided with a limiting structure (22), and the limiting structure (22) is connected to the main supporting column (21) to limit the crossbar (3).

3. The height-adjustable large-span prestressed steel strand support frame according to claim 2, characterized in that: The limiting structure (22) is provided with a U-shaped iron (221) and a limiting block (222); the U-shaped iron (221) is fixedly connected to the supporting main column (21); the cross bar (3) is connected to the U-shaped iron (221); and the limiting block (222) is fixedly connected to both sides of the cross bar (3) for sliding out limiting.

4. The height-adjustable large-span prestressed steel strand support frame according to claim 3, characterized in that: The main support column (21) is movably connected to the support frame base (1), the main support column (21) is a screw, and the main support column (21) is provided with an upper connection end (212), the screw is fixedly connected to the support frame base (1) through the adjustment structure (23), and the U-shaped iron (221) is fixedly connected to the upper connection end (212).

5. The height-adjustable large-span prestressed steel strand support frame according to claim 4, characterized in that: The adjustment structure (23) is provided with an upper nut (231) and a lower nut (232), and the upper nut (231) and the lower nut (232) can be connected to the screw rod, the upper nut (231) is connected to the upper side of the upper end of the support frame base (1), and the lower nut (232) is connected to the lower side of the upper end of the support frame base (1) relative to the upper nut (231), thereby adjusting the elongation of the supporting main column (21).

6. The height-adjustable large-span prestressed steel strand support frame according to claim 4, characterized in that: The cross bar (3) is designed as a round iron tube, and the cross bar (3) is rotatably connected to the U-shaped iron (221).

7. The height-adjustable large-span prestressed steel strand support frame according to claim 1, characterized in that: The support frame base (1) is provided with a connecting frame (11) and a base support column (12), wherein the base support column (12) is relatively connected to the four sides of the connecting frame (11) to stabilize the connecting frame (11).

8. The height-adjustable large-span prestressed steel strand support frame according to claim 7, characterized in that: Main column holes (111) are provided on two adjacent sides of the connecting frame (11), and the supporting main columns (21) can be movably connected to the connecting frame (11) through the main column holes (111).

9. The height-adjustable large-span prestressed steel strand support frame according to claim 7, characterized in that: The support frame base (1) is provided with a support frame (13) and a fixing plate (14), and the fixing plate (14) is fixedly connected to the upper and lower ends of the support frame (13) arranged opposite to each other to stabilize the support frame (13).

10. The height-adjustable large-span prestressed steel strand support frame according to claim 9, characterized in that: The support frame (13) is of trapezoidal design, and a second main column hole (131) is provided in the middle of the upper end of the support frame (13). The supporting main column (21) can be movably connected to the connecting frame (11) through the second main column hole (131).

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